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arXiv quant-ph/0302188quant-ph
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运动原子Rabi振荡的抑制

Suppression of Rabi oscillations for moving atoms

B. Navarro, I. L. Egusquiza, J. G. Muga, G. C. Hegerfeldt

摘要:

当原子进入激光照射区域时,在一定条件下,激光诱导的二能级原子的拉比振荡被抑制。对于时间拉比振荡的效果有两个制度:经典的,在中间的原子速度,和量子在低速度,分别与激光区域中的原子的非相干或相干的内部状态的形成。在低速区,激光将原子投射到可以通过失谐控制的纯内部状态。空间拉比振荡仅在这种低速量子状态下被抑制。

英文摘要:

The well-known laser-induced Rabi oscillations of a two-level atom are shown to be suppressed under certain conditions when the atom is entering a laser-illuminated region. For temporal Rabi oscillations the effect has two regimes: classical-like, at intermediate atomic velocities, and quantum at low velocities, associated respectively with the formation of incoherent or coherent internal states of the atom in the laser region. In the low velocity regime the laser projects the atom onto a pure internal state that can be controlled by detuning. Spatial Rabi oscillations are only suppressed in this low velocity, quantum regime.

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